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 Watson, \V. N'.'w Variety of Orthndontiuia qiacilc hchwaegr. Jouni. Bot. 



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Wattam, W. E. L. Cryptogamic Botany, Phanerogamic Botany [Report]. Ann. 



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Webster, A. D. Wild Plants a Guide to Tree Growth. Country Life. July 22, 



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 Weiss, F. E. Problem of Graft-Hybrids. Discovery. Jan., pp. 12-14. 



Variations in the Nuclear Constitution of Plants. Lanes and C. Nat. 



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Key to the Harpidioid Hypna. Nat. Jan., pp. 13-16 ; Mar., pp. 103108. 



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 Williams, ^Iaud. On the Influence of Immersion in certain Electrolytes upon 



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 Williams, 'S., and Leach, W. Relict Osmunda Swamp. Lanes and C. Nat. 



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 Williamson. F. Lancashire Working-men Naturalists, torn. cit. Aug., 



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 Wills, R. G. Bacteria from the Geological Aspect [Abs.]. Pror. Lircrp. Geol. 



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Alchemilla filicnuli? Bnser. torn. cit. July. p. 210. 



Wilson, A. West Yorkshire Botanical Notes. ' Nut. Dec. . pp. 397-.39S. 

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Micros. Club. Nov.. pp. 360-361. 

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 Withycombe. C. L. Food of Boreus. torn. cit. June, p. 200. 

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 WoKMALD, H. Further Studies of the 'Brown Rot' Fungi : I. A Shoot-Wilt 



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Observations on a Discomycete Found on ^ledlar Fruits. Tran.<. Brit. 



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 Wratislaw, M. E. T. Food of Woodpigeon. FieJd. Feb. 18, p. 234. 

 Yapp, R. H. Concept of Habitat. Journ. Ecol. May, pp. 1-18. 



Dovev Salt Marshes in 1921, torn. tit., pp. 18-23. 



